Electric-field-induced conductance transition in 8-hydroxyquinoline aluminum (Alq3)
Electric-field-induced conductance transition in 8-hydroxyquinoline aluminum (Alq3)
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DOI：
10.1063/1.1778211
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发表时间：
2004-09
影响因子：
3.2
通讯作者：
A. Mahapatro;R. Agrawal;Subhasis Ghosh
中科院分区：
文献类型：
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作者：
A. Mahapatro;R. Agrawal;Subhasis Ghosh
我们报道了在夹在两个金属电极之间的Alq3薄层中，电场诱导的电导从绝缘态到导电态的转变。在阴极为Al，阳极为Al、Au和铟锡氧化物的器件中，观察到了具有高通断比的场感开关行为，∼为105.在两个电极都具有高功函数的器件中不存在开关行为，这表明有效的电子注入在Alq3基单层器件的电场诱导开关行为中起着重要的作用。
We report an electric-field-induced conductance transition from an insulating state to a conducting state in a thin layer of Alq3 sandwiched between two metal electrodes. Field-induced switching behavior with a high on-off ratio of ∼105 is observed in the devices, in which the cathode electrode is Al and the anode electrode is varied including Al, Au, and indium tin oxide. The switching behavior is absent in devices in which both electrodes have a high work function, indicating that efficient electron injection has an important role in the electric-field-induced switching behavior of Alq3-based single-layer devices.